Smelting

Smelting (also called Cooking) is the act of producing refined goods in Minetest via the Furnace.

Fuel

The following can currently be used as fuel in the Furnace (as of the latest 0.4-dev version), the italic number is the time the fuel with last, the bold number is the amount of items smelted per block/item:
Most items in the default game take 3 seconds to be smelted.